公开(公告)号：WO2015153115A1

公开(公告)日：2015-10-08

申请号：PCT/US2015/021130

申请日：2015-03-18

Applicant: GENERAL ELECTRIC COMPANY

Inventor： LI, Suhui ,  JOSHI, Narendra, Digamber ,  MCMANUS, Keith, Robert

IPC: F23R3/14 ,  F23R3/28

CPC classification number: F23R3/286 ,  F23R3/14

Abstract: A system for premixing fuel and air prior to combustion in a gas turbine engine includes a mixing duct, a centerbody fuel injector located along a central axis of the mixing duct, an outer annular swirler located adjacent an upstream end of the mixing duct for swirling air flowing therethrough in a first swirl direction and an inner annular swirler located adjacent of the mixing duct upstream end for swirling air flowing therethrough in a second swirl direction. The system includes a hub separating said inner and outer annular swirlers to permit independent rotation of an air stream therethrough and multiple hollow paths located radially outward around the centerbody fuel injector and at a radially inward side of the inner annular swirler for allowing a flow of sweeping air over the surface of the centerbody fuel injector.

Abstract translation: 用于在燃气涡轮发动机燃烧之前预混合燃料和空气的系统包括混合管道，沿着混合管道的中心轴线定位的中心体燃料喷射器，邻近混合管道的上游端设置的外部环形旋流器，用于旋转空气 在第一旋转方向上流过其中，并且位于邻近混合管道上游端的内部环形旋流器，用于在第二旋转方向上流过其中的涡流。 该系统包括：分隔所述内环形旋流器和外环形旋流器的轮毂，以允许空气流独立旋转;以及围绕中心体燃料喷射器径向向外定位的多个中空路径，以及在内环形旋流器的径向内侧， 空心在中心体燃油喷射器的表面上。